Answer: duckandcover

AnswerCrossword Clue
DUCKANDCOVERAnti-nuke advice
DUCKANDCOVERDiscredited fallout protection procedure
DUCKANDCOVERCurl up in a protective position
DUCKANDCOVERRaw materials for a feather pillow?
DUCKANDCOVEROld school instruction